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Large magneto-chemi...
Large magneto-chemical-elastic coupling in highly magnetostrictive Fe-Ga alloys
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- Narsu, B. (författare)
- KTH,Tillämpad materialfysik
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- Wang, Gui-Sheng (författare)
- KTH,Tillämpad materialfysik
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- Johansson, Börje (författare)
- Uppsala universitet,KTH,Tillämpad materialfysik,Materialteori
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- Vitos, Levente (författare)
- Uppsala universitet,KTH,Tillämpad materialfysik,Materialteori
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(creator_code:org_t)
- AIP Publishing, 2013
- 2013
- Engelska.
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Ingår i: Applied Physics Letters. - : AIP Publishing. - 0003-6951 .- 1077-3118. ; 103:23, s. 231903-
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- The strong softening of the tetragonal shear elastic constant (C') is the main reason for the second magnetostriction peak observed in Fe100-xGax alloys. Here, we study the coupling between chemical order and magnetism with the aim to understand the origin of the elastic softening. We demonstrate that C' strongly depends on the degree of order of Ga atoms in alpha-Fe. The B-2 type ordering proves to have an important role on the elastic softening for x < 19%, whereas the extreme shear lattice softening and the anomalous temperature dependence of C' are found to be due to the strong magnetochemical coupling in the DO3 phase.
Ämnesord
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Nyckelord
- Chemical order
- Degree of order
- Elastic softening
- Fe-Ga alloy
- Shear elastic constants
- Temperature dependence
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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